direct effects of ANS activity on some organs (lecture 1)

Question 1

on the iris of the eye what is the action of
a1
M3

Answer 1

a1- contract

M3- contract

Question 2

on the ciliary muscle of the eye what is the action of
B
M3

Answer 2

B-relaxes

M3- contracts

Question 3

on the SA node of the heart what is the action of
B1B2
M2

Answer 3

B1B2: accelerate
M2: decelerate

Question 4

on the ectopic pacemakers of the heart what is the action of

B1B2

Answer 4

B1B2: accelerates

Question 5

on the contractility of the heart what is the action of
B1B2
M2

Answer 5

B1B2: increases
M2: decreases

Question 6

on the skin, splanchnic vessels of blood vessels, what is the action of a

Answer 6

contraction

Question 7

on the skeletal muscle vessels what is the action of
B2
a

Answer 7

b2: relaxes
a: contracts

Question 8

on the endothelium of blood vessels, what is the action of M3

Answer 8

releases EDRF:

Question 9

what is the effect on bronchiolar smooth muscle
B2
M3

Answer 9

B2: relaxes
M3: contracts

Question 10

in the GI tract what are the effects on a2, B2 and a1 on the smooth muscle wall and spincters

Answer 10

a2, b2 on the smooth muscle wall-relax

a1 on the sphincters-contract

Question 11

what are the effects & receptors of the parasymp and their activity on the GI track

Answer 11

smooth muscle wall: contract M3
sphincteres: relax M3
increase secretions: M3
activate myenteric plexus: M1

Question 12

what are the symp receptors and actions on the GU smooth muscle:
bladder wall
sphincter
uterus (prego)
penis (seminal vesicles)

Answer 12

bladder wall: B2 relax
sphincter: a1 contract
uterus (prego):B2 relax and a contract
penis (seminal vesicles): a ejaculation

Question 13

what are the parasymp receptors and actions on the GU smooth muscle:
bladder wall
sphincter
uterus (prego)
penis (seminal vesicles)

Answer 13

bladder wall: contract M3
sphincter: M3 relax
uterus (prego) M3 contract
penis (seminal vesicles): M erection

Question 14

what are the symp receptors and action in the skin:
pilomotor smooth muscle
thermoregulatory sweat
apocrine (stress sweat)

Answer 14

pilomotor smooth muscle: a contract
thermoregulatory sweat: M increase
apocrine (stress sweat): a increase

Question 15

what are the receptors and action of the sympathetics on the metabolic functions of:
liver
fat cells
kidney

Answer 15

liver: 
   gluconeogenesis B2, a1
   glycogeneolysis B2, a1
fat cell: lipolysis B3
kidney: renin release B1

Question 16

what symp receptor will decrease the Ach release

Answer 16

a2

Question 17

what parasymp receptor will decrease the NE release

Answer 17

M6